Exterior surface of a rear wheel unit for a motorcycle to tricycle conversion kit



FIG. 1 is a right side perspective view of an exterior surface of a rear wheel unit for a motorcycle to tricycle conversion kit showing my new design, the corresponding perspective view from the left side being a mirror image thereof;

FIG. 2 is a right side elevation;

FIG. 3 is a left side elevation;

FIG. 4 is a rear elevation view; and,

FIG. 5 is a top plan view.

The broken lines shown in FIGS. 1–5 are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an exterior surface of a rear wheel unit for a motorcycle to tricycle conversion kit, as shown and described. 